Acura bulletin B25-026
What it saysAn uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work. NHTSA’s full summary ↓
Acura filed this with NHTSA as a service bulletin dated Jul 9, 2025, received Apr 29, 2025, about the visibility/wiper — 2 documents under this number. It names 2 model years (2016–2017). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationService Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B25-026 | Service bulletin | Jul 9, 2025 | 11020861 | PDF, 2,744 KB |
| B25-026 | Service bulletin | Apr 18, 2025 | 11017331 | PDF, 2,873 KB |
What the document itself lists
The manufacturer titles it “Warranty Extension: 2014–17 MDX Moisture in the Inner Taillights”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 34150-TZ5-H04 | Right Inner Taillight (RIGHT LID LIGHT ASSEMBLY) | 1 | eBay Motors → |
| 34155-TZ5-H04 | Left Inner Taillight (LEFT LID LIGHT ASSEMBLY) | 1 | eBay Motors → |
| 38221-SNA-A31 | Fuse (7.5A) (depending on trim level) | 1 | eBay Motors → |
| 38221-SNA-A41 | Fuse (10A) (depending on trim level) | 1 | eBay Motors → |
| 91501-S04-003 | Body Clip (To hold the template) | 2 | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 7141G8 | Replace left inner taillight, check inner taillight harness (includes inspection) | 0.6 hrs |
| B25026A | 34155-TZ5-A72 7141G9 Replace right inner taillight, check inner taillight harness… | 0.6 hrs |
| 7141G9 | Replace right inner taillight, check inner taillight harness (includes inspection) | 0.6 hrs |
| 7141H0 | Replace both inner taillights, fuse, & check inner taillight harness (includes… | 0.8 hrs |
Read by machine from the document NHTSA serves (11 pages), read Oct 4, 2026. A part number is shown only where it matches Acura’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 646 complaints with NHTSA since 2015.
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the visibility/wiper
Source: same model, same component group21 other manufacturer communications filed against the Acura MDX under the same component group (visibility/wiper), newest first. The eight newest are listed; the rest are on the Acura list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B25-003 | Service bulletin | Sep 4, 2025 | Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights no… |
| BTI&04092025901 | Other | Apr 9, 2025 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022- 2024 MDXs & 2021-2025 TLXs with a client complaint of a… |
| BTI&11052024901 | Other | Nov 5, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
| BTI&10252024902 | Other | Oct 25, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 MDXs with a client complaint of a high-pitched nois… |
| BTI&10212024905 | Other | Oct 21, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
| BTI&10042024902 | Other | Oct 4, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
| BTI&09162024902 | Other | Sep 17, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
| ATI&08292024901 | Other | Aug 29, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Acura, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Acura B25-026 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the B25-026 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Honda warranty extension on file lists the ones Honda has filed.
Which vehicles does B25-026 cover?
The manufacturer filed it against 2 model years: 2017 Acura MDX, 2016 Acura MDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.